Drilling rig



Dec. 4, 1923. I 1,476,402

W. J. JEFFERS DRILLING RIG Filed 001:. 19. 1920 4 Sheets-Sheet 2 5]vweutoz WJJEFFERS.

Dec. 4, 1923. 1,4'26,402

w. J. JEFFERS I DRILLING RIG Filed Oct- 19, 1920 4 SheetsSheet 5WJJEFFERS.

Dec. 4, 1923.

w. J. JEFFERS DRILLING RIG Filed Oct. 19 1920 4 Sheets-Sheet 4 6301mm IPatented Dec. 4, 1923.

UNITED STATES Lizaiez WILLIAM J. JEFFERS, OF COPAN, OKLAHOMA.

DRILLING RIG.

Application filed October 19, 1920. Serial No. 418,057.

To all whom it may concern:

Be it known that I, WVILLIAM J. Jnrrnns a citizen of the United States,residing at Copan, in the county of Washington and State of Oklahoma,vhave invented certain new and useful Improvements-in Drilling Rigs, ofwhich the following is a specification, reference being had to theaccompanying drawings.

This invention relates toimprovements in drilling rigs.

An important object of the invention is to provide. a device of thischaracter in which the use of clutches is dispensed with.

A further object of the invention is to provide in a drilling rig anovel and eflicient' construction of spudding arm consisting of a seriesof link connections so constructed, that at the point of connection withthe bit holding cable of the drilling rig the spudding shoe has nomovement at all upon the cable and consequently does not wear upon thesame.

A still further object of the invention is to provide a device of thischaracter which may be readily controlled and operated by a singleattendant.

Other objects and advantages of the invention will become apparentthroughout the course of the following description. 7

In the accompanying drawings, wherein for the purpose of illustration isshown a preferred embodiment of my invention, and wherein like referencecharacters designate like parts throughout:

Figure 1 is a plan view of the well drilling rig constructed inaccordance with my invention;

Figure 2 is a side elevation thereof;

Figure 3 is a section taken on the line 33 of Figure ,1; V

Figure 4 is a section taken on the line l-:t of Figure l;

Figure 5 is an enlarged detail view showing in'solid lines the bullwheel in the neutral position, and in dotted lines the hull wheel indriving connection with the band wheel shaft;

Figure 6 is a side elevation showing the mounting of this end of thebull wheel shaft;

Figure 7 is an end elevation thereof;

' Figure 8 is a section taken on the line 88 of Figure 2, and

Figure 9 is a detall sectional View showing the sand wheel drivingconnection in driving position in full lines and neutral position indotted lines.

Referring now more particularly to the drawings, the numeral 10indicates a substantially rectangular wheel-supported frame havingmounted upon the forward end thereof a mast 11 consisting of upper andlower sections 12 and 13 pivotally connected, as at 14, so that thesections of the mast may be folded when the rig is being transportedfrom place to place. When in use, the upper section of the mast is heldin elevated position by braces 11 secured to. the upper section of themast and to the rearlend of the frame 10.

Extending transversely of the frame 10 1s a band wheel shaft 15, one endof the shaft projecting exteriorly of the frame and being providedthereon with a band wheel 16. The frame is provided forwardly thereofwith a power plant of any suitable description, shown in the present.instance as comprising an engine 17 to the shaft. of which is secured adriving pulley 18 which is connected with a band wheel 16 by a belt 19.

Extending transversely of the frame for ward of the band wheel shaft '15is a bull wheel shaft 20. The band wheel shaft 15 is provided adjacentone side of the frame with a friction drum 21 preferably provided uponits outer surface with a V-ohaped friction face. shaft 20 is a bullwheel 22. having its peripheery provided with a V-shaped groove adaptedto coact with the friction face of the friction wheel or drum 21. Uponthe opposite side of the bull wheel from the friction drum 21 is mounteda stationary brake 23. When in the neutral or normal position the bullwheel 22 is out of engagement with both the friction frame 21 and thebrake 23.

The end of the bull wheel shaft 20 next adjacent the bull wheel 22 hasits bearing formed in a plate 2% eccentrically thereof. This plate 24 isrotatably mounted in and held in engagement with in any suitable mannera bracket 25 secured to the frame 10. Secured to and extending upwardlyfrom the plate 524 is an arm 26 to the upper end of which is pivot-allyconnected the Mounted upon the bull wheel rear end of the operating rod27, the forand shaft assume the positions shown in the dotted lines inFigure 5 causing the bull wheel 22 to come into frictional engagementwith the drum 21. and the bull wheel shaft gagement with either thebrake 23 or friction drum 21, as hereinbefore stated.

To the bull wheel shaft 20 is secured one end of a cable 29- which cablepasses over the pulley or a sheave 30 mounted upon the upper end of themast 11, the end of the cable being adapted for attachment tothe usualboringtools which are indicated at 31.

To the. opposite end of the band wheel shaft from that bearing the bandwheel 16, is secured a crank 32 to the end of which is pivot-allyconnected one end of a link The forward end of the link 33 is connectedto. the end of the crank 34 secured to a shaft 35 hereinafter to bereferred to as the spudding shaft. Interiorly of the frame, the shaft35' is provided with a second arm 36, the free end of which is pivotallyconnected to a spudding arm 37 provided with a hook adapted to engagethe cable 29. The

' inner end of the shaft 35is preferably eX tended beyond the arm 36 andwhen the spudding shoe 37 is not engaged with the cable 29 the hookedend 38 thereof rests against theshaft preventing the spudding shoe fromcoming into contact with the ground in a manner which might causebreakage thereto.

To the band wheel shaft 15, adjacent that end thereof bearing the arm 32but interiorly of the frame, is secured a Second fric tion drum 39 whichis preferably likewise provided with a V-shaped friction face. Extendingtransversely of the frame rearwardly of the band wheel shaft 15, is asand reel shaft 40 which is provided with a friction wheel 41 adapted tocoact with the friction wheel 39. Upon the opposite side of the frictionwheel 41 from the friction wheel 39. a brake 42 is secured to the frame10. The adjacent end of the sand wheel shaft 40 is mounted in thebearing 48 which is longitudinally shift-able upon the frame 10. A yoke44 is provided embodying spaced arms 45 extending upon the oppositesides of one side arm of the frame and pivot-ally connected thereto, asat 46, the upper ends of the arms being inturned and engaging thebearing 43. To the lower end of the yoke 44 is pivotally connected the arear end of a link 48, the forward end of which is pivotally connectedto the end of transversely ofthe frame and provided with any suitablemeans whereby the same may be. rocked, as a handle. If the shaft 50 isso rocked as to cause the link 48 tomove rearwardly, the bearing 43 isforced forwardly and the sand reel friction drum 41 is forced intoengagement with the friction drum 39 by the band wheel shaft 15. If,however, the link 48 is moved forwardly, the friction drum 41 is forcedinto engage ment with the brake 42 and the sand reel shaft 40 heldagainst movement.

In the use of my device, when it is desired to drill, the bull wheelshaft is released to permit the weight of the tools to. unreel the cable29, from the bull wheel shaft 20 until the tools arrive at the bottom ofthe bore. The bull wheel shaft may then be shifted until the bull wheel22 comes into engagement with the brake 23 and the, bull wheel shaft isheld against rotation. The spndding shoe 3? is then engaged with thecable 29 by passingthe hook end 38. thereof over the cable. If the bandwheel shaft is now rotated, this rotation willimpart a rockingn'iovemont to the shaft 35., arm 36 and to the spudding shoe 37. Thisrocking: movement causes the cable 29 to be alternately drawn to theposition shown in solid lines in Figure 2 and released to the positionshown in the dotted lines with the result that the boring bar isreciprocated'. When it is desired to elevate the tool 31 and clean thebore, the shoe 37 is released from the cable and the operating bar 27'pulled forwardly when the bull wheel will come into en-gagement'with thefriction wheel 21 of the band wheel shaft and the bull wheel shaft 20will be rotated, winding the cable 21 thereon and elevating the tot-ls.When the tool is fully withdrawn the handle is forced inwardly until thebull wheel comes into engagement with the brake-2? thereof when the toolwill be held in elevated position. When it is desired to clean the well,the sand bucket 54 may be placed in the bore and the reel released frommovement and the weight of the sandbi-icket'will cause the cable 51 tobe unreeled therefrom until the bucket arrives at the bottom of thebore. When it is desired to elevate the bucket, the shaft 50 is rockedso as to cause the link to move rearwardly and bring the shaft drums 41and 39 into engagement when the sand wheel shaft will be driven from theband wheel shaft and the cable therefrom wound thereon.

It will be obvious to those fam liar with the art that the accompanyingdrawings merely diagrammatically illustrate the construction andarrangement of my drilling rig; and it will likewise be obvious thatmany changes in such construction are possible without in any mannerdeparting from the spirit of my invention. 1, accordingly,

do not limit myself to the construction hereinbefore set forth, exceptas so limited by the sub-joined claim.

What I claim is: I

In a well drilling rig, a frame, a mast secured thereon and having asheave at its upper end, a bull Wheel shaft, a cable connected to thebull wheel shaft and passing over the sheave, a bell crank lever, 51hand wheel shaft, an operating connection between the band wheel shaftand one arm of the bell crank lever and a spudding shoe pivoted to theopposite arm of the bell crank lever and having a hooked end to engage aportion of the cable between the hull wheel shaftand the sheave, theconnection between the arms of the bell crank lever including a shaftpivoted upon the frame, the inner end of the shaft extending inwardly ofthe arm to which the shoe is connected and forming 20 a support for thefree end of the shoe when the same is not in use.

In testimony whereof I hereunto afilx my signature.

WILLIAM J. JEFFERS.

